<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>

<script>
  console.time("for")
  for (let i = 0; i < 2000000000; i++) {
  }
  console.timeEnd("for")

  let date = new Date("1990-9-21");
  console.log(date.getMonth())

  const params = [1990, 2, 22, 13, 22, 11]
  let date1 = new Date(...params);
  console.log(date1)

</script>
</body>
</html>